Rotary engine.



C. W. & W. A. BROWN.

RQTAHY ENGINE. APPLICATION HLED 0CT.14.19|5

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ROTARY ENGINE. APPLICATION FILED OCT. I4. I9I5.

Patented-June 26, 1917.

4 SHEETS-SHEET 4.

ggg@ Q IIII/ "mo/III? @a II ITIIIIII If@ llflrl WANN of each wall 27, at any Athat 28 represents a supply pipe.

are received between the members ofthe vanes 20, and 20, and are pressed outwardly against the opposite side walls of the cylinder 15, by an expansion spring 22. Similarly against the sides of the said Vanes, between the saine and the walls of the opening,` 25, strips 23, are employed, against the backs of which springs 24 act to force the strips against the vanes. The numeral 26, indicates guide ribs in the opening 25, against. which the Vanes 20, 20a, bear at opposite sides.

The opposite side walls 27, of the cylinder 15, are undulated, the number of undulations being governed by the number of Yanes 20, 20a, andhence, the arrangement illustrated is adapted to coact with vanes on the rotor 180 degrees apart. The arrangement presents at two points, on each wall of the cylinder, convexed surfaces against which the sides of the rotor 1S 'will Contact, that is to say, on each side of the rotor there are two points at an angle ot' 13G degrees which come in contact with the rotor, and these points on the respective sides are quadrantal making :tour points in all at an angle of 90 degrees, and alternately at opposite sides of the rotor, with which points the cylinder comes in contact with the said rotor. The undulations of the walls 27, are

such that every point on one wall is equidistant from a point directly opposite it at the opposite side oit the rotor so that at all-'points around the cylinder, the distance between'the walls thereof corresponds with Also, the surface given point is perpendicular to the center of the shaft 16, so as to present a surface parallel with the side edge of a vane regardless of the angle of the vanes to a horizontal line drawn through the center of the shaft 16.

We have indicated pipes 28, 29, at opposite sides of the engine, the one of which will constitute an inlet for fuel and the other an exhaust, according to the direction of rotation. At present it may he considered The pipes 28, 29, communicate with transverse openings in the casing, the inlet opening' being indicated by the numeral 30, in Figs. and 5, and at opposite sides ot the rotor 18, annular channels 31, 32, are formed communieatinp with said openings. Thus, there is non-interrupted communication between the supply pipe 28, and the annular channel 31, in the rotor, and similarly a non-interrupted communication between the annular chanthe width of the vanes.

nel 32, at the opposite side and the pipe 29.

Between the annular depressions 19, in the rotor 13, and the annular depressions 31, 32, there will thus be produced annular ribs or Walls 33, at each side of tht rotor. Radial vports 34, 35, are formed one in each rib 33,-

establishing communication. between the to 7. The positions of the ports 34, 35, are

such that the vane 20 will have movement transversely of the rotor in a plane between the said ports. An oblique port 36, extends from the channel 3l, at the port 35, at one side of the rotor to the depression 19 at the opposite side of the rotor. Also, an oblique port 37, extends from the opposite channel 32, and port 34 to the depression 19, at the opposite side of the rotor. In' Fig. 7 the arrow ai indicates the direction of the fuel inlet to the port 34, by way of the channel 31), and the arrow m at the left indicates the direction of exhaust from the port 35, to the exhaust pipe 29, (through the channel 32). l

The piston 20 serves to draw in a charge in the rear thereof while it scavenges at its forward side. The trailing piston 20a at its forward side compresses the charge previously drawn in by piston 20, while the force of an explosion acts against the back ot the piston 20, the compressed charge having been transferred frointhe front to the back of the piston 20a bymeans hereinafter described.

.Spark plugs 41, are provided on the engine corresponding with the points at which the undulating' walls 27 of thecylinder 15, are touched by the sides of the rotor 13. Each spark plug is fitted in a tube 42, and in fixed relation with said tube and in communication therewith, is a rotary trunk valve 43. -A lby-pass 44, is formed in the casing communicating` at both ends with the cylinder 15, at opposite sides of 'each point in th'e" cylinder touched by the 'rotor 1S. Saidv by-pass is commanded by the trunk valve 43, which khas at one side, an opening 45. Turning,l movement is given to the trunk valve at the same speed as the rotor 18, the means illustrated for this purpose comprising a pinion ranged to be driven troni a pinion 47, on

46, on each tube 42, ar-

ent example, intermediate gear wheels 48, to give'the proper speed of revolution to the rotary valves/i .i

The valves 43, thus coact with the varies 20, and 20, and the ports 34, 35, 36, 37, to effect the cycle ot operations. Thus, the vane 20, having passed a point of contact with the wall 27, at one side of the. cylinder 15, it will begin to drawin a supply of fuel behind said vane through port 34. .The fuel thus drawn in by the vane 20,'will-1-be comL pressed by the trailing' vane 20, the gases heini; forced into one end f the by-pass 44, and into the trunlrvalve 43, and the tube 42,

" 'he opposite outlet er having the the 'valine QO, pa the bjwplss, eieny i@ close EL,

pass and establish vave openi ing 45, at 'wxch time the epe, Iz wl @oeuf end cause Ehe expeeien in me reel of vane 20, and the cycle Wil? be cennued. The scavenging by he izm'wed side gf the advance mme 20. in. the fighi 1 "und Chamber im Ehe mim" A 20, 'tha me adjacent to *ehe advance vane 2.01 and these poets are entiee Wvh the pos in the internal eombus'on engine, enslng elements 10, mth the pessed engine. l'eqnie e They pi'm'ide a Cylinder: 2' ing Chamber semi@ Sneek with the Cyindi-A zumumf der the dep? f, 1de? 15u.

u'. er eemerv jee/lf uhu: Workeil v mme iene 1.9, Corespenflng piovded ai;

Wells 27a, of L. *y

"inasmuch as ghe 1u same in the fowl o 8 '107 as in the oth have empeye the same @reference ehgeeers n'ppec te @he emx'eeponding pms se thai: these not be m'tue refer; d 30. The pews 3f? 35a', coriespen wh the pel L. 35, es de :dem the pei-ts 36, 317:1, coll'eepond Wifsh the perte 36, 37. The Same arrengement of peri-s ie provided ai the Vane 207 the alal pos be ing ndeeecf 'by ihe characters 34' '55, enf?. bhe oblique ports by the c'lmileters; 36% 37b.

n operniien the steam or compressed received in die ehamne 3l, assllming the engine is Pointing' in the eta the nterna eembrstimi em The Hunk vaves and by-pass of Jamel @embusiion engine ae omitted. The Steam W' pass through che ecal "pe'ts 34E-i7 S7, 34h., STZU the annular b se the respeci've rig-ht and e'lt Chambers er? ghe eyne' l5, and at he back of venes 20 Q0, ne he imiter pass the high :gemss ef the undueted f Shawn m llege.

"A xa-zi 27%, and by werfe-in@ pressu'fe i l r L o the venes, Wll f, reiger, me :eem ezneuslngbhmuglu. 35%. 3F33 35, 36* iD Jewel eem Having v ceim e new Paen:

A rotary engine iiwming 'z5/Budel, a rotor epee: img; i1 :m having au annular f" Side face 'Miers L eppm'e 'ehe annuler vex'sely die @een Janes ewzfe I :mC Mieming; be eem :mmfm' flepeseene 'the W` Us of we eyimlev., eher@ being means 'unemee be cylnde e move ihe venes and eeaet xherefwt'x '0 subd the jy-flieder et seperated peints around. Saune, all Toter hang; pol-ts cemmuncntww o Suid pees-51ml 1 ene "m nlem and @schal-ge fuere Foei'eg ports in eommunleagmg with mib fie/peesH nus with *ehe ehem -thc vanes, there being vanes on the rotor and! movable transversely thereotl to project into either side chamber of the cylinder, there being means in the cylinder to move the vanes ltransversely, said means coacting with the vanes and with 'the side of the rotor to cut ofi' 'each chamber, at intervals, and subdivide the same at separated points around the cylinder, and the rotor having portscommunicating with both annular depressions and thus with the chambers of the cylinder for the inlet and discharge cfa motive fluid in the rear of and in 'front of a vane.

5. A rotary engine including an annular cylinder having undulating side Walls, a rotor operating in the cylinder and dividing the same into annual chambers disposed at opposite sides of the rotor, the said undulaty ing walls contacting with the sides of the rotor alternately at opposite sides of the rotor and serving to cut oli' each side chamber and subdivide the same at intervals around the cylinder, and vanes carried by the rotor and transversely movable to follow the undulating lines of the cylinder walls, the rotor having annular depressions opposite the cylinder walls, and ports communicating with said depressions and thus with both side chambers of the cylinder for the inlet and discharge of a motive Huid behind and in front of a vane.

G. A rotary engine including an annular cylinder, having undulating side walls, a rotor operating in the cylinder and having annular depressions at the cylinder, said rotor dividing the cylinder into annularside chambers, transversely disposed vanes carried by the rotor, the vanes being movable across the rotor to project into either side chamber of the cylinder, there being annular channels in the rotor at opposite sides and separated from the annular depressions, and radial ports in the rotor establishing communication between the said annular depressions and annular channels at the respective sides of the rotor, said ports being' disposed one at each side of the rotor and at opposite sides oi a vane, and there being an oblique port from each radial port and the adjacent channel to the annular depression at the opposite side of the rotor.l

7. A rotary engine including an annular cylinder, a rotor operating in the cylinder, vancs carried by the? rotor and movable transversely across the rotor\,-the rot-or contacting at a side surface with the adjacent wall of the cylinder at intervals around the cylinder to cause a transverse movement of ports in the rotor communicating with the cylinder in front of and behind a vane and there being a bypass in the wall ot' the cylinder extending from one side of the point of contact of the cylinder Wall to the opposite side of said contact point, a rotary valve disposed in the bypass and having an opening therein, means for turning the valve in unison with the rotor to alternately connect its opening with the respective ends of the by-pass, means to conduct an explosive charge to one of the ports of the rotor, means to ignite the explosive charge at the said valve and bypass, and means to exhaust the products of coinbustion from the other of said' ports.

8. A rotary internal combustion engine including a stator having an annular cylinder, a rotor disposed in the cylinder in a plane dividing the cylinder into separate side chambers, the Walls ofthe chambers contacting at separated points with the respec tive sides ot' the rotor, a fuel inlet and outlet in said statonports inthe rotor adjacent to each other and respectively communicating with the cylinder at opposite sides of the rotor, the ports being in communication respectively With the inlet and outlet of the stator, a combined suction and scavenging vane transversely movable. on the rotor and extending across the seme in a plane between said ports to contact with the opposite side walls of the cylinder, a transversely. movable trailing vane on the rotor acting to compress the charge drawn in by the first vane, and means to transfer the compressed charge to the back ofthe trailing vane and explode the same.

9. A rotary internal combustion engine including a stator havin-g an annular cylinder with undulating side wal-ls, a rotor dividing the cylinder into annular side chambers, transversely disposed vanes carried by the rotor and movable across the saine bythe undulations of the cylinder Walls, the sides of the piston being in contact alternately at opposite sides with the, undulations of the cylinder Walls, and inlet and outlet ports in the rotor, said ports being disposed one at each side.. of the rotor and at opposite sides of a vane, so that the port at one side of the rotor communicates with one side chamber in advance of the vane and the other port communicates with the other sidechamber at the opposite side of the vane, there being lateral ports from each of said ports conimunicating with the opposite chamber and there being ports leading respectively to and from the said inlet an outlet ports ofthe rotor through the stator.

In testimony whereof we have signed ourA names to this specification in the presence of two subscribing Witnesses. i

CHESTER 'W BROVN. VILLIAM ASA BROWN. l/Vitnesses:

A. E. KILMER, lV. E. NINnss. 

